Preheat and Prep: Preheat oven to 350°F (175°C). Lightly spray a 9x13 inch baking dish with cooking spray to prevent sticking.
Cook the Ground Beef: Heat a large skillet over medium-high heat. Add ground beef and cook for 6-8 minutes, breaking it apart with a wooden spoon, until no pink remains and beef is nicely browned. Drain excess fat by tilting pan and spooning it out.
Add Salsa: Return skillet to medium-low heat. Stir in chunky salsa and simmer for 2-3 minutes until heated through and flavors meld together. Remove from heat.
Prepare the Baking Dish: Pour half of the enchilada sauce into the bottom of the prepared baking dish and spread evenly. This prevents tortillas from sticking and adds moisture.
Warm Tortillas: Microwave tortillas for 20-30 seconds wrapped in a damp paper towel to make them pliable and prevent cracking when rolling.
Fill and Roll Enchiladas: Place about 1/4 cup beef mixture down the center of each tortilla. Top with 1 heaping tablespoon of shredded cheese. Roll tightly and place seam-side down in the baking dish. Repeat with remaining tortillas.
Top with Sauce and Cheese: Pour remaining enchilada sauce over all enchiladas, making sure each one is covered. Sprinkle remaining cheese generously over the top.
Cover and Bake: Cover dish tightly with aluminum foil. Bake for 30-35 minutes until cheese is melted and bubbly, and enchiladas are heated through completely.
Rest and Serve: Let enchiladas rest for 5 minutes before serving. This allows sauce to thicken slightly. Garnish with desired toppings like sour cream, cilantro, green onions, or avocado.